Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Trading Arrangement: Trading Arrangement [Axis] Maximum Maximum [Member] Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Title of 12(b) Security Title of 12(b) Security Carrying Value Reported Value Measurement [Member] Diluted earnings - net income / (loss) attributable to common shareholders after allocation to common and preferred OP units(1) Net Income (Loss) Available to Common Stockholders, Diluted Subsequent Event Subsequent Event [Member] Total Notes and Other Receivables, net Total notes and other receivables [Member] Reduction in note receivable balance in exchange for redemption of preferred OP units Increase (Decrease) in Notes Receivables Changes in Fair Value, Level 3 [Axis] Changes in Fair Value, Level 3 [Axis] Changes in Fair Value, Level 3 Derivative Instruments, Gain (Loss) by Hedging Relationship, by Income Statement Location, by Derivative Instrument Risk [Table] Derivative Instruments, Gain (Loss) [Table] Weighted Average Interest Rates at Debt, Weighted Average Interest Rate Fair Value Measurements, Nonrecurring Fair Value Measurements, Nonrecurring [Table Text Block] Adjustment to Compensation, Amount Adjustment to Compensation Amount Segment Reporting [Abstract] Segment Reporting [Abstract] Deferred tax benefit / (expense) Discontinued Operation, Deferred Income Tax Expense (Benefit) Discontinued Operation, Deferred Income Tax Expense (Benefit) Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, Estimated Amortization Expense Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, Estimated Amortization Expense [Table Text Block] Other assets, net Disposal Group, Including Discontinued Operation, Other Assets Schedule of Charges in Fair Values Fair Value, Assets Measured on Recurring Basis [Table Text Block] Realized Gain (Loss), Foreign Currency Transaction, before Tax Realized Gain (Loss), Foreign Currency Transaction, before Tax Leases Lessee, Finance Leases [Text Block] Franchise agreements and other intangible assets Franchise Rights [Member] Hurricane Helene and Milton Hurricane Helene and Milton [Member] Hurricane Helene and Milton Derivative Instrument [Axis] Derivative Instrument [Axis] Measurement Frequency [Axis] Measurement Frequency [Axis] Pre-tax cash proceeds Proceeds from Divestiture of Businesses Current tax expense Current Income Tax Expense (Benefit) Current Income Tax Expense (Benefit) Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Five Property operating and maintenance Cost of Other Property Operating Expense Ancillary Other Cost of Operating Revenue Secured Installment Notes Receivable on Manufactured Homes Secured Installment Notes Receivable on Manufactured Homes [Member] Secured Installment Notes Receivable on Manufactured Homes Leases [Abstract] Leases [Abstract] OP units accretion Accumulated Distributions In Excess Of Net Income, Adjustment For Accretion Of Temporary Equity Accumulated Distributions In Excess Of Net Income, Adjustment For Accretion Of Temporary Equity Common stock par value (in dollars per share) Common Stock, Par or Stated Value Per Share Cash, cash equivalents and restricted cash Disposal Group, Including Discontinued Operation, Cash and Cash Equivalents Asset Acquisition [Axis] Asset Acquisition [Axis] Catastrophic Event [Domain] Catastrophic Event [Domain] Intangible Asset, Excluding Goodwill, after Accumulated Amortization Intangible Asset, Excluding Goodwill, after Accumulated Amortization Schedule of RSUs Granted Share-Based Payment Arrangement, Activity [Table Text Block] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Number of reportable segments Number of Reportable Segments Net cash used for investing activities - continuing operations Cash Provided by (Used in) Investing Activity, Continuing Operation Investment property Real Estate Investment Property, at Cost Alternate Base Rate (ABR) Alternate Base Rate (ABR) [Member] Alternate Base Rate (ABR) Cash flow hedge gain (loss) to be reclassified within 12 months Cash Flow Hedge Gain (Loss) to be Reclassified within 12 Months Entity Address, City or Town Entity Address, City or Town Shares granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Performance Condition Performance Condition [Member] Performance Condition Other Redeemable Equity Interests Other Redeemable Equity Interests [Member] Other Redeemable Equity Interests Statement of Financial Position [Abstract] Statement of Financial Position [Abstract] Title of Individual [Domain] Title and Position [Domain] Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Distributions of capital from nonconsolidated affiliates Proceeds from Equity Method Investment, Distribution, Return of Capital Schedule of Noncontrolling Interests Noncontrolling Interests [Table Text Block] Noncontrolling Interests Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] Other comprehensive income / (loss) Other Comprehensive Income (Loss), Net of Tax Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Schedule of Segment Assets Segment Reporting, Reconciliation of Asset by Segment to Consolidated [Table Text Block] Other Expenses Other Expenses Subsequent Event Type [Axis] Subsequent Event Type [Axis] Adjustments to Additional Paid in Capital, Other Adjustments to Additional Paid in Capital, Other Net unrealized loss on interest rate derivatives Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] Error Correction [Table] Error Correction [Table] Utilities Expense Utilities Expense Utilities Expense Secured Borrowings Secured Borrowings [Member] Secured Borrowings Schedule of Segment Information Segment Reporting [Table Text Block] Payments on lines of credit Repayments of Lines of Credit Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest [Member] Notes Receivable, Fair Value Disclosure Notes Receivable, Fair Value Disclosure Income / (loss) from discontinued operations, net Income from discontinued operations, net Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax Schedule of Future Minimum Operating Lease Payments Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block] Document Period End Date Document Period End Date Preferred stock outstanding (in shares) Preferred Stock, Shares Outstanding Principal Amount Debt Instrument, Face Amount Loss on dispositions of properties, net Loss on Disposition Gain (Loss) on Sale of Properties 2027 Lessee, Operating Lease, Liability, to be Paid, Year Two Units Redeemed (in shares) Temporary Equity, Shares Redeemed Temporary Equity, Shares Redeemed Change in distributions declared and outstanding Change in Distributions Declared and Outstanding Change in Distributions Declared and Outstanding Installment Notes Receivable on MH, net Installment notes receivable on manufactured homes, net [Member] Installment notes receivable on manufactured homes [Member] Weighted Average Interest Rate Debt Instrument, Interest Rate, Effective Percentage Matures June 15, 2026 Matures June 15, 2026 [Member] Matures June 15, 2026 Leases Lessor, Operating Leases [Text Block] Annual distribution rate Temporary Equity, Dividends Temporary Equity, Dividends Accumulated other comprehensive income Accumulated other comprehensive income Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Shell Company Entity Shell Company Consolidation Items [Domain] Consolidation Items [Domain] Time Based Time Based [Member] Time Based [Member] Realized gains Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings Common OP units Conversion of Common OP Units [Member] Conversion of Common OP Units [Member] Canadian Portfolio Canadian Portfolio [Member] Canadian Portfolio Ancillary Disposal Group, Including Discontinued Operation, Other Cost Of Operating Revenue Disposal Group, Including Discontinued Operation, Other Cost Of Operating Revenue Earnings Per Share Earnings Per Share [Text Block] Earnings per share: Earnings Per Share [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Lease Income Lease Income Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Total Liabilities Liabilities Trading Symbol Trading Symbol Unsecured Debt And Other Unsecured Debt And Other Unsecured Debt And Other Accumulated Other Comprehensive Income / (Loss) AOCI Including Portion Attributable to Noncontrolling Interest [Member] Company Selected Measure Name Company Selected Measure Name Notes receivable from real estate operators Notes Receivable from Real Estate Developers [Member] Notes Receivable from Real Estate Developers Sale of Stock [Domain] Sale of Stock [Domain] Cash Consideration, net Cash Consideration from Sale of Real Estate, net of Mortgage Debt and Other Adjustments Cash Consideration from Sale of Real Estate, net of Mortgage Debt and Other Adjustments Less: Cash, cash equivalents and restricted cash - discontinued operations Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Discontinued Operation Number of Properties Impairment, Long-Lived Asset, Held-for-Use, Number Of Properties Impairment, Long-Lived Asset, Held-for-Use, Number Of Properties Credit Facility [Domain] Credit Facility [Domain] Operating Activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Executive Officers Executive Officer [Member] Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Disposal Group Name [Domain] Disposal Group Name [Domain] Loss from Catastrophes Loss from Catastrophes Vesting Type [Domain] Vesting Type [Domain] [Domain] for Vesting Type [Axis] Distributions payable Dividends Payable Disposal Groups, Including Discontinued Operations Disposal Groups, Including Discontinued Operations [Table Text Block] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Safe Harbor Business Safe Harbor Business [Member] Safe Harbor Business Continuing Operations Continuing Operations [Member] Operating cash outflows for operating leases Operating Lease, Payments Award Timing Predetermined Award Timing Predetermined [Flag] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] All Interest Rates Except ABR Loans All Interest Rates Except ABR Loans [Member] All Interest Rates Except ABR Loans Share-based compensation - amortization and forfeitures APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Other income / (expense), net Disposal Group, Including Discontinued Operation, Other Income Add: dilutive restricted stock (in shares) Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Net Income / (Loss) from Continuing Operations Net Income / (Loss) from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Common stock repurchased Stock repurchased and retired during period, value Stock Repurchased and Retired During Period, Value Plan Name [Domain] Plan Name [Domain] Notes and other receivables, net Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net Antidilutive Securities Excluded from Computation of Earnings Per Share, by Antidilutive Securities [Axis] Antidilutive Securities [Axis] Two Thousand and Four Director Plan Two Thousand and Four Director Plan [Member] Two Thousand and Four Director Plan Right-of-use lease assets, net Operating Lease, Right-of-Use Asset Schedule of Preferred OP Units Redeemed Temporary Equity [Table Text Block] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Senior Unsecured Notes - April 2032 Maturity Senior Unsecured Notes - April 2032 Maturity [Member] Senior Unsecured Notes - April 2032 Maturity Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Long-term line of credit Long-Term Line of Credit Total Distribution Payments of Ordinary Dividends, Common Stock Expiration Date Trading Arrangement Expiration Date Hedging Relationship [Axis] Hedging Relationship [Axis] Total Shareholders' Equity Beginning Balance Ending Balance Equity, Including Portion Attributable to Noncontrolling Interest Disposal Group, Including Discontinued Operations [Line Items] Disposal Group, Including Discontinued Operations [Line Items] Accrued expenses and accounts payable Disposal Group, Including Discontinued Operation, Accounts Payable and Accrued Liabilities Unsecured debt Total unsecured debt Unsecured Debt Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Derivative [Table] Derivative [Table] Asset impairments Disposal Group, Including Discontinued Operation, Asset impairments Disposal Group, Including Discontinued Operation, Asset impairments Changes in Fair Value, Level 3 [Domain] Changes in Fair Value, Level 3 [Domain] Changes in Fair Value, Level 3 [Domain] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Security, Excluded EPS Calculation [Table] Net debt discount (premium) Debt Instrument, Unamortized Discount (Premium), Net Investing Activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Asset Acquisition [Abstract] Asset Acquisition [Abstract] Redeemable Preferred OP Units Redeemable Preferred OP Units [Member] Redeemable Preferred OP Units Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Segments [Domain] Segments [Domain] Temporary Equity [Line Items] Temporary Equity [Line Items] Cash, cash equivalents and restricted cash, beginning of period Cash, cash equivalents and restricted cash, end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation 2004 Non-employee Plan 2004 Non-employee Plan [Member] 2004 non-employee plan [Member] Debt and Line of Credit Debt Disclosure [Text Block] Notes receivable, fair value adjustment Notes Receivable, Fair Value Adjustment Notes Receivable, Fair Value Adjustment Note receivable Financing Receivable, after Allowance for Credit Loss Disposal Group Classification [Domain] Disposal Group Classification [Domain] Deferred financing costs Debt Issuance Costs, Net Business Combination [Table] Business Combination [Table] Real Estate Acquisitions and Dispositions Mergers, Acquisitions and Dispositions Disclosures [Text Block] PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Secured Debt Secured Debt [Member] Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract] Loss on remeasurement of investment in nonconsolidated affiliates Gain (Loss) on Remeasurement of Investment Gain (Loss) on Remeasurement of Investment Total Expenses Costs and Expenses Payments to Acquire Equity Method Investments Payments to Acquire Equity Method Investments Interest Rate Debt Instrument, Interest Rate, Stated Percentage Total SUI Shareholders' Equity Equity, Attributable to Parent Real Estate [Domain] Real Estate [Domain] Assets Assets [Abstract] Fair Value, Nonrecurring Fair Value, Nonrecurring [Member] Professional Fees Professional Fees Insider Trading Policies and Procedures [Line Items] Number of extension periods Debt Instrument, Number Of Extension Terms Debt Instrument, Number Of Extension Terms Line of credit facility, accordion feature, increase limit Line of Credit Facility, Accordion Feature, Increase Limit Line of Credit Facility, Accordion Feature, Increase Limit Deferred tax benefit / (expense) Deferred Income Tax Expense (Benefit) Sungenia JV Sungenia Joint Venture [Member] Sungenia JV [Member] Net capital transfer from / (to) consolidated affiliates Proceeds From Contributions From Affiliates, Net Of Distributions Paid Proceeds From Contributions From Affiliates, Net Of Distributions Paid Total securities (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Entity Central Index Key Entity Central Index Key Equity [Abstract] Equity [Abstract] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] 2015 Equity Plan Two Thousand Fifteen Equity Plan [Member] Two Thousand Fifteen Equity Plan [Member] Key Employees and Executive Officers Key Employees and Executive Officers [Member] Key Employees and Executive Officers. Debt And Other Debt And Other Debt And Other Liabilities held for sale and discontinued operations, net (see Note 2) Total liabilities attributable to discontinued operations, net Disposal Group, Including Discontinued Operation, Liabilities Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Investment, Name [Axis] Investment, Name [Axis] Preferred OP Units, Issuance Price Preferred OP Units, Issuance Price Preferred OP Units, Issuance Price Designated as Hedging Instrument Designated as Hedging Instrument [Member] Annual distribution rate Preferred Stock, Dividend Rate, Percentage Senior Unsecured Notes Senior Unsecured Notes [Member] Senior Unsecured Notes Basis points Debt Instrument, Basis Spread on Variable Rate Schedule of Distributions Declared Schedule of Dividends Payable [Table Text Block] Variable Rate [Domain] Variable Rate [Domain] Restricted Stock Restricted Stock [Member] All Individuals All Individuals [Member] Land Disposal Group Including Discontinued Operation Land Disposal Group Including Discontinued Operation Land Net cash provided by / (used for) financing activities - continuing operations Cash Provided by (Used in) Financing Activity, Continuing Operation Other Intangible Assets Intangible Asset [Text Block] Land improvements and buildings Real estate investment property, Land improvements and buildings Real estate investment property, Land improvements and buildings Statement [Line Items] Statement [Line Items] Total Assets Assets Operating Leases Lessee, Operating Lease, Liability, to be Paid, Fiscal Year Maturity [Abstract] Accelerated share-based compensation expense, number of shares (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Accelerated Vesting, Number Dispositions of properties Disposition of properties [Member] Disposition of properties Operating Segments Operating Segments [Member] Total Revenues Disposal Group, Including Discontinued Operation, Revenue Share-Based Compensation Share-Based Payment Arrangement [Text Block] PEO PEO [Member] Beginning balance (in shares) Ending balance (in shares) OP Units Outstanding Shares, Outstanding Less: Preferred return to preferred OP units / equity interests Preferred return to Series A-1 preferred OP units Preferred return to convertible, non-redeemable Series A-1 Preferred Operating Partnership unit holders. Goodwill Goodwill Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount Other income / (expense), net Disposal Group, Including Discontinued Operation, Other Expense Discontinued Operations, Disposed of by Sale Discontinued Operations, Disposed of by Sale [Member] Sale of consolidated affiliates Noncontrolling Interest, Decrease from Deconsolidation Distributions in Excess of Accumulated Earnings Retained Earnings [Member] Revolving Credit Facility Revolving Credit Facility [Member] Schedule of Finite-Lived Intangible Assets, Amortization Expense [Table] Schedule of Finite-Lived Intangible Assets, Amortization Expense [Table] Tabular disclosure of amortization expense related to finite-lived intangible assets by category. Interest, brokerage commissions and other, net Disposal Group, Including Discontinued Operation, Interest, brokerage commissions and other, net Interest, brokerage commissions and other, net Shareholders' Equity Increase (Decrease) in Stockholders' Equity [Roll Forward] Common stock outstanding (in shares) Common Stock, Shares, Outstanding Award Timing Disclosures [Line Items] Schedule of Fair Values Fair Value, by Balance Sheet Grouping [Table Text Block] Diluted earning per share (in dollars per share) Diluted earning per share (in dollars per share) Earnings Per Share, Diluted Intangible Asset, Finite-Lived, Amortization Expense Intangible Asset, Finite-Lived, Amortization Expense Number of Properties Number of Properties Sold Number of Properties Sold Intangible Asset, Finite-Lived [Line Items] Intangible Asset, Finite-Lived [Line Items] Share-Based Payment Arrangement [Abstract] Conversion of Stock [Table] Conversion of Stock [Table] Inventory of manufactured homes Disposal Group, Including Discontinued Operation, Inventory Purchases and issuances Purchases and Inssurances [Member] Purchases and Inssurances Add: common and preferred OP units dilutive effect (in shares) Incremental Common Shares Attributable to Dilutive Effect of Common Equity Incremental Common Shares Attributable to Dilutive Effect of Common Equity Schedule of Nonconsolidated Affiliates Equity Method Investments [Table Text Block] Financial Assets Assets Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract] Change in estimated property insurance recoveries Change in Estimated Insurance Recoveries Change in Estimated Insurance Recoveries Market Condition Market Condition [Member] Market Condition [Member] Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Total Intangible Asset, Excluding Goodwill, before Accumulated Amortization Net income attributable to common shareholders after restricted stock allocation Net income attributable to common shareholders after restricted stock allocation Net income attributable to common shareholders after restricted stock allocation Aggregate gross sales price Aggregate Value of Shares to be Issued in Accordance to Sales Agreement Aggregate Value of Shares to be Issued in Accordance to Sales Agreement Secured borrowings on collateralized receivables Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount Schedule of Equity Method Investments [Table] Equity Method Investment [Table] Realized gains / (losses) Net Earnings (Loss) [Member] Net Earnings (Loss) Title of Individual [Axis] Title and Position [Axis] Sale of Stock [Axis] Sale of Stock [Axis] Home sales Disposal Group, Including Discontinued Operation, Revenue From Home Sales Disposal Group, Including Discontinued Operation, Revenue From Home Sales Operating Income (Loss), Total Operating Income (Loss) Schedule of Future Minimum Finance Lease Payments Finance Lease, Liability, to be Paid, Maturity [Table Text Block] Accumulated depreciation Disposal Group, Including Discontinued Operation, Accumulated depreciation Disposal Group, Including Discontinued Operation, Accumulated depreciation Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] RV RV Segment [Member] RV Segment December 2021 Sales Agreement December 2021 Sales Agreement [Member] December 2021 Sales Agreement Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Common stock issued (in shares) Common Stock, Shares, Issued Treasury Lock and Interest Rate Swap Treasury Lock and Interest Rate Swap [Member] Treasury Lock and Interest Rate Swap Gain (Loss) on Foreign Currency Derivatives Recorded in Earnings, Net Gain (Loss) on Foreign Currency Derivatives Recorded in Earnings, Net Loans Payable Loans Payable Investment in properties Payments for Capital Improvements and Developments of Real Estate Payments for Capital Improvements and Developments of Real Estate Class of Stock [Line Items] Class of Stock [Line Items] Series J preferred OP units Series J Preferred Op Units [Member] Series J Preferred Op Units Inventory of manufactured homes Inventory, Finished Homes Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Investment property, net Disposal Group Including Discontinued Operation, Investment property, net Disposal Group Including Discontinued Operation, Investment property, net 2028 Lessee, Operating Lease, Liability, to be Paid, Year Three Number of payments made [Domain] Number of payments made [Domain] Number of payments made [Domain] Termination Date Trading Arrangement Termination Date Subsequent Events [Abstract] Subsequent Events [Abstract] Income / (loss) from discontinued operations, net (see Note 2) Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table] Fair Value, Recurring and Nonrecurring [Table] Disposal Groups, Including Discontinued Operations, Disclosure Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Fair Value as of Grant Date Award Grant Date Fair Value Operating Activities [Axis] Operating Activities [Axis] Temporary Equity Increase (Decrease) in Temporary Equity [Roll Forward] Ancillary Ancillary Revenue Ancillary Revenue Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Share repurchase program, remaining authorized, amount Share Repurchase Program, Remaining Authorized, Amount Arrangement Duration Trading Arrangement Duration Consolidation Items [Axis] Consolidation Items [Axis] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Insurance receivables Insurance receivables Insurance receivables Gross Carrying Amount Intangible Asset, Finite-Lived, before Accumulated Amortization Total Revenues Revenues Revenues Total Income from Nonconsolidated Affiliates Income (Loss) from Equity Method Investments Dilutive Securities [Axis] Dilutive Securities [Axis] Dilutive Securities Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Expenses Operating Costs and Expenses [Abstract] Intangible Asset, Finite-Lived, Class [Domain] Intangible Asset, Finite-Lived, Class [Domain] Award Type [Domain] Award Type [Domain] Fair Value of Financial Instruments Fair Value Disclosures [Text Block] Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Remainder 2026 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year One Income from discontinued operations, before income taxes Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax Contract with Customer, Liability Contract with Customer, Liability Other assets, net Other Assets Property operating and maintenance Disposal Group, Including Discontinued Operation, Property operating and maintenance Property operating and maintenance expenses - Discontinued operations Interest Interest Expense, Debt Liability Class [Axis] Liability Class [Axis] Redemption Rights - Series G Preferred OP Units [Member] Redemption Rights - Series G Preferred OP Units [Member] Redemption Rights - Series G Preferred OP Units Value of Shares Sold in Forward Sale Transactions Value of Shares Sold in Forward Sale Transactions Value of Shares Sold in Forward Sale Transactions Cash, cash equivalents and restricted cash Cash, Cash Equivalents and Restricted Cash - Continuing Operations Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Schedule of Finite-Lived Intangible Assets [Table] Intangible Asset, Finite-Lived [Table] Notes Due From Other Real Estate Developers Notes Due From Other Real Estate Developers [Member] Notes Due From Other Real Estate Developers Non-NEOs Non-NEOs [Member] Ownership interest Equity Method Investment, Ownership Percentage 2027 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Two Distributions Dividends, Cash Schedule of Debt Schedule of Debt [Table Text Block] Investment, Name [Domain] Investment, Name [Domain] Leases Lessee, Operating Leases [Text Block] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Series L Series L [Member] Series L Repurchases of common stock Payments for Repurchase of Common Stock Collateralized Mortgage Backed Securities Collateralized Mortgage-Backed Securities [Member] Statistical Measurement [Axis] Statistical Measurement [Axis] Schedule of Gains on Derivatives Derivative Instruments, Gain (Loss) [Table Text Block] Award Type [Axis] Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Common Stock Common Stock [Member] Operating lease cost Operating Lease, Cost Transfers Accounted for as Secured Borrowings, Associated Liabilities, Fair Value Adjustment Transfers Accounted for as Secured Borrowings, Associated Liabilities, Fair Value Adjustment Transfers Accounted for as Secured Borrowings, Associated Liabilities, Fair Value Adjustment Contingent consideration expense Disposal Group, Including Discontinued Operation, Contingent Consideration expense Contingent Consideration expense related to tax protection agreement with former owners of certain marina properties Derivative Contract [Domain] Derivative Contract [Domain] Total Liabilities, Temporary Equity and Shareholders' Equity Liabilities and Equity Variable lease cost Variable Lease, Cost Accelerated share-based compensation expense Share-Based Payment Arrangement, Accelerated Cost Employee Stock Option Share-Based Payment Arrangement, Option [Member] Noncontrolling interests Equity, Attributable to Noncontrolling Interest Segments [Axis] Segments [Axis] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Tabular List, Table Tabular List [Table Text Block] Additional paid-in capital Additional Paid in Capital 2028 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Three Name Awards Close in Time to MNPI Disclosures, Individual Name Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Senior Unsecured Notes - July 2031 Maturity - First Tranche Senior Unsecured Notes - July 2031 Maturity - First Tranche [Member] Senior Unsecured Notes - July 2031 Maturity - First Tranche Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Loss on remeasurement of notes receivable (see Note 4) Gain (Loss) on Remeasurement of Notes Receivable Gain (Loss) on Remeasurement of Notes Receivable Gain (Loss) on Remeasurement of Notes Receivable Adjustment to Compensation: Adjustment to Compensation [Axis] Reclassification from AOCI to earnings Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Conversion of Series A-4 preferred stock Reclassifications of Temporary to Permanent Equity Joint Venture RV Portfolio Joint Venture RV Portfolio [Member] Joint Venture RV Portfolio Dividends Payable [Line Items] Dividends Payable [Line Items] Dividends Payable [Table] Dividends Payable [Table] A-3 preferred OP units Series A-3 Preferred OP Units [Member] Series A-3 Preferred OP Units [Member] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Cash paid for interest, net Interest Paid, Excluding Capitalized Interest, Operating Activity Hedging Designation [Axis] Hedging Designation [Axis] Distributions Temporary Equity, Distributions Temporary Equity, Distributions Mortgage loans payable (see Note 7) Loan Amount Mortgage Term Loans Mortgage Term Loans Credit Facility [Axis] Credit Facility [Axis] Total Assets Measured at Fair Value Beginning balance Ending balance Assets, Fair Value Disclosure Cost, Direct Labor Cost, Direct Labor Name Measure Name Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Debt Instrument [Line Items] Debt Instrument [Line Items] Additional Paid-in Capital Additional Paid-in Capital [Member] Indefinite-lived Intangible Assets [Axis] Intangible Asset, Indefinite-Lived, Class [Axis] Issuance and costs of common stock, OP units and preferred OP units, net Payments Of Stock Issuance Costs, Net Payments Of Stock Issuance Costs, Net Name Trading Arrangement, Individual Name Sales and settlements Sales and Settlements [Member] Sales and Settlements Other financial liabilities (contingent consideration) Other Liabilities, Fair Value Disclosure Notes receivable from real estate operators Notes due from Real Estate Developers [Member] Notes due from Real Estate Developers [Member] Company Selected Measure Amount Company Selected Measure Amount Depreciation and amortization Depreciation, Depletion and Amortization Net Income (Loss) from Continuing Operations Available to Common Shareholders, Basic Net Income (Loss) from Continuing Operations Available to Common Shareholders, Basic Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Accounts and Financing Receivables [Table] Weighted - average remaining lease term - operating leases Operating Lease, Weighted Average Remaining Lease Term Proceeds related to disposition of properties Proceeds from Sale, Real Estate, Held-for-Investment Non-PEO NEO Non-PEO NEO [Member] Gain / (loss) on foreign currency exchanges Foreign currency exchange gains Gain (Loss), Foreign Currency Transaction, before Tax Rental homes and improvements Rental Properties Temporary Equity, by Class of Stock [Table] Temporary Equity, by Class of Stock [Table] Award Timing Method Award Timing Method [Text Block] Net change in cash, cash equivalents and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Notes and other receivables, net (includes $201.4 and $183.7 at fair value, respectively, see Note 4) Total Notes and Other Receivables, net Accounts and Financing Receivable, after Allowance for Credit Loss Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Net loss Net Income (Loss) Attributable to Parent Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Temporary Equity, Exchange Period Temporary Equity, Exchange Period Temporary Equity, Exchange Period Restatement Determination Date: Restatement Determination Date [Axis] Schedule of Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Series D preferred OP units Series D Preferred OP Units [Member] Series D Preferred OP Units [Member] Other liabilities Disposal Group, Including Discontinued Operation, Other Liabilities Pledged Assets, Real Estate, Not Separately Reported Pledged Assets, Real Estate, Not Separately Reported Pledged Assets, Real Estate, Not Separately Reported Revenues Revenues [Abstract] Depreciation, amortization and loss on disposal of assets Disposal Group, including Discontinued Operation, Depreciation, amortization and disposal on sale of assets Amount of Depreciation, amortization expense and disposal on sale of assets attributable to the disposal group, including but not limited to discontinued operation. SV Lift SV Lift, LLC [Member] SV Lift [Member] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Add: allocation to restricted stock awards Dilutive Securities, Effect on Basic Earnings Per Share, Dilutive Convertible Securities Park Holidays Sale Park Holidays Sale [Member] Park Holidays Sale Indefinite-lived assets - Trademarks, Trade Names and Other Intangible Assets Trademarks, Trade Names and Other Intangible Assets [Member] Trademarks, Trade Names and Other Intangible Assets Statistical Measurement [Domain] Statistical Measurement [Domain] Document Fiscal Year Focus Document Fiscal Year Focus Common stock, $0.01 par value. Authorized: 360.0 shares; Issued and outstanding: 122.5 shares at June 30, 2026 and 123.5 shares at December 31, 2025 Common Stock, Value, Issued 2026 (excluding six months ended June 30, 2026) Lessee, Operating Lease, Liability, to be Paid, Year One Schedule of Shares Granted Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Common stock withheld to satisfy income tax obligations related to vesting of restricted stock Payment, Tax Withholding, Share-Based Payment Arrangement Interest Disposal Group, Including Discontinued Operation, Interest Expense Schedule of Long-Term Debt Instruments Schedule of Long-Term Debt Instruments [Table Text Block] Line of Credit and Other Debt Line of Credit [Member] Restatement Determination Date Restatement Determination Date Number of Collateralized Term Loans Number of Collateralized Term Loans Number of Collateralized Term Loans In-place leases Leases, Acquired-in-Place [Member] Amendment Flag Amendment Flag Schedule of Notional Amounts of Outstanding Derivative Positions Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block] Financing cash outflows for finance leases Finance Lease, Principal Payments Total Equity Total Equity [Member] Total Equity Accumulated depreciation Real Estate Investment Property, Accumulated Depreciation Disposal Group Classification [Axis] Disposal Group Classification [Axis] Loss Contingencies [Table] Loss Contingencies [Table] Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Investment property Disposal Group, Including Discontinued Operation, Property, Plant, and Equipment Entity Address, State or Province Entity Address, State or Province Weighted average common shares outstanding: Weighted Average Common Shares Outstanding [Abstract] Weighted Average Common Shares Outstanding [Abstract] PEO Total Compensation Amount PEO Total Compensation Amount Net foreign currency translation gains / (losses) Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Real property Disposal Group, Including Discontinued Operation, Lease Income Disposal Group, Including Discontinued Operation, Lease Income Share-based Payment Arrangement, Noncash Expense [Abstract] Share-Based Payment Arrangement, Noncash Expense [Abstract] Home costs and selling Cost of Homes Sold Cost of Homes Sold Derivative, Notional Amount Derivative, Notional Amount Weighted average common shares outstanding - basic (in shares) Weighted average common shares outstanding (in shares) Weighted Average Number of Shares Outstanding, Basic Mortgage loans payable Secured Debt Loss Contingencies [Line Items] Loss Contingencies [Line Items] 2029 Lessee, Operating Lease, Liability, to be Paid, Year Four Total Purchase Price (in millions) Asset Acquisition, Consideration Transferred Notes And Other Receivables Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Assets held for sale and discontinued operations, net (see Note 2) Total assets attributable to discontinued operations, net Disposal Group, Including Discontinued Operation, Assets Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Shares granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Class of Stock [Axis] Class of Stock [Axis] Basis of Accounting, Policy Basis of Accounting, Policy [Policy Text Block] Deferred financing costs Debt Issuance Costs, Gross Service, retail, dining, and entertainment Disposal Group, Including Discontinued Operation, Service revenue Disposal Group, Including Discontinued Operation, Service revenue Other identifiable assets / (liabilities), net Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Assets (Liabilities) Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Assets (Liabilities) Net income / (oss) attributable to SUI common shareholders Net Income (Loss) Available to Common Stockholders, Basic Gross installment notes receivable Accounts Receivable, before Allowance for Credit Loss Distributions Payments of Ordinary Dividends Accumulated Amortization Intangible Asset, Finite-Lived, Accumulated Amortization Receivable [Domain] Receivable [Domain] Line of credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Discontinued Operations, Held-for-Sale or Disposed of by Sale Discontinued Operations, Held-for-Sale or Disposed of by Sale [Member] Series F preferred OP units Series F Preferred OP Units [Member] Series F Preferred OP Units Net cash provided by operating activities - continuing operations Cash Provided by (Used in) Operating Activity, Continuing Operation Noncontrolling Interests Noncontrolling Interest [Member] Award vesting percentage of target, maximum Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Percentage Of Target, Maximum Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Percentage Of Target, Maximum Performance period Share-Based Compensation Arrangement By Share-Based Payment Award, Award Performance Period Share-Based Compensation Arrangement By Share-Based Payment Award, Award Performance Period Net Cash Used For Investing Activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] Equity and Temporary Equity Equity [Text Block] OP units outstanding (in shares) Temporary Equity, Shares Outstanding Security Exchange Name Security Exchange Name Dilutive Securities [Domain] Dilutive Securities [Domain] Dilutive Securities [Domain] Series A-1 preferred OP units Series A-1 Preferred OP Units [Member] Preferred OP Units [Member] New Credit Facility New Credit Facility [Member] New Credit Facility Key Employees Key Employees [Member] Key Employees [Member] Cost of Property Repairs and Maintenance Cost of Property Repairs and Maintenance Shares availability for issuance (in shares) Common and Preferred Stock, Shares Authorized Common and Preferred Stock, Shares Authorized Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Name Outstanding Recovery, Individual Name Accumulated net gain on derivatives AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Valuation allowance to adjust assets to estimated fair value, less costs to sell Disposal Group, Including Discontinued Operation, Valuation Allowance Disposal Group, Including Discontinued Operation, Valuation Allowance Total indefinite-lived assets Intangible Asset, Excluding Goodwill, Indefinite-Lived Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] MH and annual RV residents for rent, utility charges, fees and other pass-through charges, net Other receivables for rent, water, sewer usage Other receivables for rent, water, sewer usage Noncash Investing and Financing Activities Noncash Investing and Financing Items [Abstract] Non-cash valuation allowance charge Loss from classification to held for sale Discontinued Operation, Provision for Loss (Gain) on Disposal, Net of Tax Compensation Amount Outstanding Recovery Compensation Amount Individual: Individual [Axis] Diluted weighted average common shares outstanding - diluted (in shares) Diluted weighted average common shares and securities (in shares) Weighted Average Number of Shares Outstanding, Diluted Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Entity Emerging Growth Company Entity Emerging Growth Company Underlying Security Market Price Change Underlying Security Market Price Change, Percent Borrowings on lines of credit Proceeds from Lines of Credit Derivative Financial Instruments Derivative Instruments and Hedging Activities Disclosure [Text Block] Less: Imputed interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Aggregate Estimated Fair Value Impaired Assets, Carrying Value of Asset The carrying amount on the books of the impaired assets. Other receivables Other Receivables Furniture, fixtures and equipment Disposal Group, Including Discontinued Operation, Furniture, fixtures and equipment Disposal Group, Including Discontinued Operation, Furniture, fixtures and equipment GTSC GTSC LLC [Member] GTSC [Member] Asset Impairment Charges Long-Lived Asset, Held and Used, Impairment Loss Intangible Asset, Goodwill and Other [Abstract] Intangible Asset, Goodwill and Other [Abstract] Outstanding letters of credit Letters of Credit Outstanding, Amount Severance Costs Severance Costs Net cash provided by operating activities - discontinued operations Cash Provided by (Used in) Operating Activity, Discontinued Operation Distributions in excess of accumulated earnings Accumulated Distributions in Excess of Net Income Furniture, fixtures and equipment Furniture and Fixtures, Gross Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Indefinite-lived Intangible Assets, Major Class Name [Domain] Intangible Asset, Indefinite-Lived, Class [Domain] Total Lease Payments Lessee, Operating Lease, Liability, to be Paid All Executive Categories All Executive Categories [Member] Conversion of Stock [Line Items] Conversion of Stock [Line Items] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Installment Notes on Manufactured Homes & Notes Receivable from Real Estate Developers Installment Notes on Manufactured Homes & Notes Receivable from Real Estate Developers [Member] Installment Notes on Manufactured Homes & Notes Receivable from Real Estate Developers Asset Acquisition [Domain] Asset Acquisition [Domain] Other intangible assets, net Disposal Group, Including Discontinued Operation, Intangible Assets Weighted average interest rate Receivable with Imputed Interest, Effective Yield (Interest Rate) Accounting Changes and Error Corrections [Abstract] Accounting Changes and Error Corrections [Abstract] Schedule of Earnings Per Share, Basic and Diluted Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Investment in property Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Segment Reporting Segment Reporting [Text Block] Minimum Minimum [Member] Schedule of Intangible Assets Amortization Expense Schedule of Intangible Assets Amortization Expense [Table Text Block] Schedule of Intangible Assets Amortization Expense [Table Text Block] - Tabular disclosure of amortization expense related to finite-lived intangible assets by category. Schedule Of Other Receivables Schedule Of Other Receivables [Table Text Block] Schedule Of Other Receivables Liabilities Liabilities [Abstract] Denominator Weighted Average Number of Shares Outstanding Reconciliation [Abstract] Income Statement Location [Axis] Location, Statement of Income, Balance [Axis] Income (Loss) from Continuing Operations, Per Diluted Share Income (Loss) from Continuing Operations, Per Diluted Share Income (Loss) from Continuing Operations, Per Basic Share Income (Loss) from Continuing Operations, Per Basic Share Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Other receivables, net Other receivables, net [Member] Other receivables, net [Member] Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Total Liabilities Measured at Fair Value Financial Liabilities Fair Value Disclosure Other liabilities Other Liabilities Allowance for rent, water, sewer usage receivables Allowance for rent, water, sewer usage receivables Allowance for rent, water, sewer usage receivables Business Combination [Line Items] Business Combination [Line Items] Total Expenses Disposal Group, Including Discontinued Operation, Operating Expense Common stock authorized (in shares) Common Stock, Shares Authorized Investment property, net Investment property, net Real Estate Investment Property, Net Useful Life Intangible Asset, Finite-Lived, Useful Life Number of share-based compensation plans Number Of Share-Based Compensation Plans Number Of Share-Based Compensation Plans Exercise Price Award Exercise Price Cash and escrow Asset Acquisition, Payments to Acquire Businesses, Gross Asset Acquisition, Payments to Acquire Businesses, Gross Schedule of Equity Method Investments [Line Items] Schedule of Equity Method Investments [Line Items] Fair Value, Recurring Fair Value, Recurring [Member] Estimated insurance recoveries Estimated Insurance Recoveries Segment Reporting [Line Items] Segment Reporting [Line Items] Share repurchase program, authorized, amount Share Repurchase Program, Authorized, Amount Document Quarterly Report Document Quarterly Report Changes to fair value Servicing Asset at Fair Value, Other Changes in Fair Value Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] Number of properties jointly secured Debt Instrument, number of properties securing a debt instrument Debt Instrument, number of properties securing a debt instrument Effect of exchange rate changes on cash, cash equivalents and restricted cash Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation Conversion Of Stock, Exchange Rate Conversion Of Stock, Exchange Rate Conversion Of Stock, Exchange Rate Debt Instrument, number of properties securing a debt instument Debt Instrument, number of properties securing a debt instument Debt Instrument, number of properties securing a debt instument General and Administrative Disposal Group, Including Discontinued Operation, General and Administrative Expense Payments on other debt Repayments of Long-Term Debt Operating Activities [Domain] Operating Activities [Domain] Series G preferred OP units Series G Preferred OP Units [Member] Series G Preferred OP Units Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Equity method investments Equity Method Investments Equity Component [Domain] Equity Component [Domain] Foreign Exchange Contract Foreign Exchange Contract [Member] Real estate tax Real Estate Tax Expense Adoption Date Trading Arrangement Adoption Date Consideration received Disposal Group, Including Discontinued Operation, Consideration Series H preferred OP units Series H Preferred OP Units [Member] Series H Preferred OP Units Home costs and selling Disposal Group, Including Discontinued Operation, Cost Of Homes Sold Disposal Group, Including Discontinued Operation, Cost Of Homes Sold Net cash provided by / (used for) financing activities - discontinued operations Cash Provided by (Used in) Financing Activity, Discontinued Operation Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Schedule of Balance Sheet Lease Info Lease, Balance Sheet Information [Table Text Block] Supplemental lease information related to weighted-average remaining lease terms, weighted-average discount rates, and Balance Sheet detail. Present Value of Lease Liabilities Lease liabilities Operating Lease, Liability Interest Interest Income, Operating Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Properties Securing Debt Properties securing debt [Member] Properties securing debt [Member] Series K preferred OP units Series K Preferred Op Units [Member] Series K Preferred Op Units Ancillary Disposal Group, Including Discontinued Operation, Ancillary Revenue Disposal Group, Including Discontinued Operation, Ancillary Revenue Letter of Credit Letter of Credit [Member] Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] All Adjustments to Compensation All Adjustments to Compensation [Member] Net Cash Provided By Operating Activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Collateralized Receivables, net Collateralized Receivables [Member] Collateralized receivables [Member] Income Statement [Abstract] Income Statement [Abstract] Shareholders' Equity Equity, Attributable to Parent [Abstract] Document Transition Report Document Transition Report Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] Intangible Asset, Finite-Lived Intangible Asset, Finite-Lived [Table Text Block] City Area Code City Area Code Subsequent Events Subsequent Events [Text Block] Name Forgone Recovery, Individual Name Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] MH MH Segment [Member] MH Segment Preferred Stock, Shares Issued Preferred Stock, Shares Issued Number of properties unencumbered Debt Instrument, Number Of Properties Unencumbered Debt Instrument, Number Of Properties Unencumbered Conversion of common and preferred OP units Conversion of Stock, Amount Converted Series C preferred OP units Series C preferred OP units [Member] Series C preferred OP units [Member] Issuance of stock and units (in shares) Stock Issued During Period, Shares, New Issues Share-based compensation - expensed Share-Based Payment Arrangement, Expense Preferred Stock, Convertible, Conversion Ratio Preferred Stock, Convertible, Conversion Ratio Measurement Basis [Axis] Measurement Basis [Axis] Common stock repurchased (in shares) Stock repurchased and retired during period, shares (in shares) Stock Repurchased and Retired During Period, Shares Current tax expense Discontinued Operation, Tax Effect of Discontinued Operation Transaction costs Disposal Group Including Discontinued Operation Transaction Costs Disposal Group Including Discontinued Operation Transaction Costs Grant date fair value per share (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Real estate tax Disposal Group, Including Discontinued Operation, Real estate tax Real estate tax expense -discontinued operations Subsequent Event Type [Domain] Subsequent Event Type [Domain] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Entity Current Reporting Status Entity Current Reporting Status Net Cash Used For Financing Activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Total Shareholder Return Amount Total Shareholder Return Amount Error Corrections and Prior Period Adjustments Restatement [Line Items] Error Corrections and Prior Period Adjustments Restatement [Line Items] Vesting Type [Axis] Vesting Type [Axis] Vesting Type [Axis] Common stock withheld to satisfy income tax obligations related to vesting of restricted stock awards Share-Based Payment Arrangement, Decrease for Tax Withholding Obligation Cash Flow Hedging Cash Flow Hedging [Member] Common OP units Common OP Units [Member] Common OP Units [Member] Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax Business Combination Business Combination [Table Text Block] Financing Activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Long-term Notes and Loans, by Type, Current and Noncurrent [Abstract] Notes and Loans Payable, by Type, Current and Noncurrent [Abstract] Derivative assets Derivative Asset Intangible Asset, Finite-Lived, Class [Axis] Intangible Asset, Finite-Lived, Class [Axis] Gary Shiffman [Member] Gary Shiffman Underlying Securities Award Underlying Securities Amount Less: Comprehensive income / (loss) attributable to noncontrolling interests Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Estimate of Fair Value Measurement Estimate of Fair Value Measurement [Member] Issuance of stock and units Stock Issued During Period, Value, New Issues Financing Receivable, before Allowance for Credit Loss, Net Of Fair Value Adjustment Financing Receivable, before Allowance for Credit Loss, Net Of Fair Value Adjustment Financing Receivable, before Allowance for Credit Loss, Net Of Fair Value Adjustment Preferred Stock Preferred Stock [Member] Other investing activities Payment for (Proceeds from) Other Investing Activity Weighted - average discount rate - operating leases Operating Lease, Weighted Average Discount Rate, Percent Secured Borrowing on Collateralized Receivables Transfers Accounted for as Secured Borrowings, Associated Liabilities [Member] Transfers Accounted for as Secured Borrowings, Associated Liabilities Segment Reporting [Table] Segment Reporting [Table] Net loss Temporary Equity, Net Income Derivative, number of instruments held Derivative, Number of Instruments Held Schedule of Lease Expense Lease, Cost [Table Text Block] Service, retail, dining and entertainment Disposal Group, Including Discontinued Operation, Service, retail, dining and entertainment expenses Service, retail, dining and entertainment expenses- Discontinued operations Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Beginning balance Ending balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Current Fiscal Year End Date Current Fiscal Year End Date Gain on disposition of properties, net Gain (Loss) on Disposition of Business Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Derivative [Line Items] Derivative [Line Items] Less: allocation to restricted stock awards Income (loss) Attributable to Common Stockholders Allocable To Non Vested Restricted Shares Income (Loss) From Continuing Operations Allocable To Non Vested Restricted Shares Issuance of Series E preferred OP units Temporary Equity, Stock Issued During Period, Value, New Issues Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Dividends per share (in dollars per share) Common Stock, Dividends, Per Share, Declared Entity File Number Entity File Number Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Senior unsecured notes Senior Notes Measure: Measure [Axis] Investment in Nonconsolidated Affiliates Equity Method Investments and Joint Ventures Disclosure [Text Block] Common and preferred OP units Noncontrolling Interest in Operating Partnerships Equity Components [Axis] Equity Components [Axis] Asset Acquisition Asset Acquisition [Table Text Block] Cash paid for income taxes Income Tax Paid, after Refund Received Entity Interactive Data Current Entity Interactive Data Current Variable Rate [Axis] Variable Rate [Axis] Less: Income / (loss) attributable to noncontrolling interests Less: Income / (loss) attributable to noncontrolling interests Net Income (Loss) Attributable to Noncontrolling Interest Redemptions of preferred OP units Total Net Cash Payments Payments For Redemption Of Temporary Equity Payments For Redemption Of Temporary Equity Entity Small Business Entity Small Business Comprehensive Income / (Loss) Attributable to SUI Comprehensive Income (Loss), Net of Tax, Attributable to Parent Lease Income, Transient Lease Income, Transient Lease Income, Transient Common stock withheld to satisfy income tax obligations related to vesting of restricted stock awards (in shares) Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Dispositions of properties Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements Gross Sales Proceeds Proceeds from Sale of Real Estate Schedule of Lease Terms Lease, Cash Flow Information [Table Text Block] Supplemental lease information related to operating and financing cash flows. MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Document Type Document Type Acquisitions, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Loss on extinguishment of debt Loss on extinguishment of debt Gain (Loss) on Extinguishment of Debt Asset impairments (see Note 13) Other Asset Impairment Charges Parkhurst Estates Parkhurst Estates [Member] Parkhurst Estates Weighted Average Years to Maturity at Debt weighted average to maturity, length Debt weighted average to maturity, length Subsequent Event [Line Items] Subsequent Event [Line Items] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Local Phone Number Local Phone Number Commitments and contingencies (see Note 14) Commitments and Contingencies Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Number of debt instruments repaid Number Of Debt Instruments Repaid Number Of Debt Instruments Repaid 2029 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Four Net cash provided by / (used for) investing activities - discontinued operations Cash Provided by (Used in) Investing Activity, Discontinued Operation Executive Category: Executive Category [Axis] Receivable Type [Axis] Receivable Type [Axis] Exchange rate Temporary Equity, Conversation Ratio Temporary Equity, Conversation Ratio Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Repayments of notes and other receivables Repayment of Notes and Other Receivables The cash inflow associated with principal collections from a borrowing supported by a written promise to pay an obligation. Supplemental Information Supplemental Cash Flow Information [Abstract] Less: Interest rate derivative gain reclassified to earnings Gains / (losses) on derivative instruments reclassified form AOCI into earnings Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax Accounts Payable and Accrued Liabilities Accounts Payable and Accrued Liabilities PEO Name PEO Name Schedule of Extinguishment of Debt Schedule of Extinguishment of Debt [Table Text Block] Financial Liabilities Liabilities Financial Instruments, Financial Liabilities, Balance Sheet Groupings [Abstract] Segment Reporting, Other Segment Item, Amount Segment Reporting, Other Segment Item, Amount Reduction in secured borrowing balance Repayment Amount Repayments of Secured Debt Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Sun Retreats Amherstberg Sun Retreats Amherstberg [Member] Sun Retreats Amherstberg Entity Tax Identification Number Entity Tax Identification Number Collateralized receivables, net Transfers Accounted for as Secured Borrowings, Assets, Carrying Amount Change in unrealized gain / (loss) on interest rate derivatives Change in unrealized gain / (loss) on interest rate derivatives Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax Proceeds from disposition of assets and depreciated homes, net Proceeds From (Payments For) Sale of Property, Plant, and Equipment Proceeds From (Payments For) Sale of Property, Plant, and Equipment Less: Preferred stock distribution Less: Preferred stock distribution Preferred Stock Dividends, Income Statement Impact Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Lease Income, Nontransient Lease Income, Nontransient Lease Income, Nontransient Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Purchases and issuances Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share Advanced reservation deposits and rent Disposal Group, Including Discontinued Operation,, Advanced reservation deposits and rent Disposal Group, Including Discontinued Operation,, Advanced reservation deposits and rent Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Total Comprehensive Income / (Loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Debt Instrument [Axis] Debt Instrument [Axis] Measurement Frequency [Domain] Measurement Frequency [Domain] Subsequent Event [Table] Subsequent Event [Table] Sales and settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases, (Sales), Issuances, (Settlements) Total Lease Cost Lease, Cost Land Land Capitalized interest Interest Paid, Capitalized, Investing Activity Disposal Group Name [Axis] Disposal Group Name [Axis] Conversion of OP units (in shares) Stock Issued During Period, Shares, Conversion of Convertible Securities Loss Before Other Items Disposal Group, Including Discontinued Operation, Operating Income (Loss) Basic earning per share (in dollars per share) Basic earning per share (in dollars per share) Earnings Per Share, Basic Other redeemable noncontrolling interests Temporary Equity, Accretion to Redemption Value Insider Trading Arrangements [Line Items] Other Liabilities (Contingent Consideration) Contingent Consideration Liability [Member] Contingent Consideration Liability Schedule of Notes and Other Receivables Schedule of notes and other receivables [Table Text Block] Schedule of notes and other receivables [Table Text Block] Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Real Estate, Type of Property [Axis] Real Estate, Type of Property [Axis] Beginning balance Ending balance Redeemable preferred stock Temporary Equity, Including Noncontrolling Interest Other adjustments Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Other Adjustments Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Other Adjustments Home sales Revenue From Home Sales Revenue From Home Sales Fair Value Measurement [Domain] Fair Value Measurement [Domain] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Schedule of Estimated Insurance Recoveries Business Insurance Recoveries [Table Text Block] Cover [Abstract] Cover [Abstract] Income / (Loss) Before Other Items Income (Loss) From Continuing Operations Before Other Items And Taxes Income (Loss) From Continuing Operations Before Other Items And Taxes Series L Preferred OP Units Series L Preferred OP Units [Member] Series L Preferred OP Units Loans Payable Loans Payable [Member] Cash Flow Hedges Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent [Abstract] Brokerage commissions and other, net Brokerage commissions and other income, net Includes brokerage commissions, gain (loss) on sale of land, and other - net Equity Awards Adjustments Equity Awards Adjustments [Member] Hedging Relationship [Domain] Hedging Relationship [Domain] Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share Plan Name [Axis] Plan Name [Axis] Foreign Currency Translation Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent [Abstract] Land improvements and buildings Disposal Group, Including Discontinued Operation,, Land improvements and buildings Disposal Group, Including Discontinued Operation,, Land improvements and buildings Schedule of Conversions Schedule of Conversions of Stock [Table Text Block] Schedule of Preferred Units Schedule of Preferred Units [Table Text Block] Other income / (expense), net Other Nonoperating Income (Expense) Senior Unsecured Notes - November 2028 Maturity Senior Unsecured Notes - November 2028 Maturity [Member] Senior Unsecured Notes - November 2028 Maturity 2030 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Five Total identifiable assets acquired net of liabilities assumed Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Asset Acquisition, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net General and administrative General and Administrative Expense General and Administrative Expense Series E preferred OP units Series E Preferred OP Units [Member] Series E Preferred OP Units [Member] Conversions Stock Issued During Period, Value, Conversion of Convertible Securities Preferred stock available for issuance (in shares) Preferred Stock, Shares Authorized Loss on foreign currency exchanges Disposal Group, Including Discontinued Operation, Foreign Currency Translation Gains (Losses) Hedging Designation [Domain] Hedging Designation [Domain] Class of Stock [Domain] Class of Stock [Domain] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Home sale proceeds Home sale proceeds Home sale proceeds Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Issue price (in dollars per share) Temporary Equity, Issuance Price Temporary Equity, Issuance Price Discontinued Operations and Disposal Groups [Abstract] 2030 Lessee, Operating Lease, Liability, to be Paid, Year Five MH / RV MH and RV Segments [Member] MH and RV Segments Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Entity Filer Category Entity Filer Category Directors Director [Member] Proceeds from Equity Method Investment, Distribution Proceeds from Equity Method Investment, Distribution Not Designated as Hedging Instrument Not Designated as Hedging Instrument [Member] Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures [Abstract] Entity Address, Address Line Two Entity Address, Address Line Two Schedule of Stock by Class [Table] Stock, Class of Stock [Table] Net Income / (Loss) Net Income / (Loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Number of payments made [Axis] Number of payments made [Axis] Number of payments [Axis] Proceeds received from insurer Insurance Recoveries Derivative liabilities Derivative Liability Entity Address, Address Line One Entity Address, Address Line One Total Cash Paid on Lease Liabilities Operating And Finance Lease, Payments Operating And Finance Lease, Payments Maturity Receivable With Imputed Interest, Term Receivable With Imputed Interest, Term Income Tax Expense (Benefit) Income Tax Expense (Benefit) Temporary equity (see Note 8) Temporary Equity Temporary Equity Notes Receivable From Real Estate Operators Notes Receivable from Real Estate Operators [Member] Notes Receivable from Real Estate Operators Net Income (Loss) Attributable to Parent [Abstract] Net Income (Loss) Attributable to Parent [Abstract] Recent Accounting Pronouncements Accounting Standards Update and Change in Accounting Principle [Text Block] Statement [Table] Statement [Table] Catastrophic Event [Axis] Catastrophic Event [Axis] Segment Reconciling Items Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member] Catastrophic event-related charges, net Loss from Catastrophes, net of Recoveries The charge against earnings in the period for the uninsured portion of a loss from a fire, explosion, or natural disaster (hurricane, earthquake), net of recoveries from insurance carriers. Extension period Debt Instrument, Extension Term Debt Instrument, Extension Term Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract]