v3.26.1
Segment Reporting - Schedule of Segments (Details)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
USD ($)
segment
Mar. 31, 2026
segment
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Segment Reporting [Line Items]          
Home sales $ 27.8   $ 41.8 $ 54.3 $ 70.5
Ancillary 24.6   25.5 33.1 33.8
Revenues 484.6   495.9 908.0 890.1
Real estate tax 27.6   26.5 54.9 51.3
Interest 6.2   16.4 13.4 20.8
Brokerage commissions and other, net 3.3   13.3 5.0 14.9
General and Administrative Expense (49.9)   (50.6) (108.5) (97.6)
Depreciation and amortization 123.9   117.3 245.3 232.0
Asset impairments (see Note 13) 17.9   33.4 18.2 57.4
Loss on extinguishment of debt 0.0   (102.4) 0.0 (102.4)
Interest 38.1   54.4 76.5 132.9
Loss on dispositions of properties, net (22.0)   (1.3) (20.9) (2.1)
Other income / (expense), net (0.1)   6.9 8.4 12.6
Gain (Loss) on Remeasurement of Notes Receivable (2.9)   (1.4) (2.8) (1.6)
Total Income from Nonconsolidated Affiliates 6.1   3.8 12.2 6.8
Loss on remeasurement of investment in nonconsolidated affiliates (1.7)   (1.5) (1.5) (1.5)
Current Income Tax Expense (Benefit) (0.6)   (2.6) (1.5) (3.8)
Net Income / (Loss) from continuing operations 42.3   (30.0) 60.7 (51.7)
Income / (loss) from discontinued operations, net (see Note 2) (1,067.2)   1,360.3 (1,091.9) 1,340.4
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest (1,024.9)   1,330.3 (1,031.2) 1,288.7
Less: Preferred return to preferred OP units / equity interests 2.5   3.2 5.2 6.3
Less: Income / (loss) attributable to noncontrolling interests (34.7)   53.5 (35.0) 51.6
Net income / (oss) attributable to SUI common shareholders $ (992.7)   1,273.6 (1,001.4) 1,230.8
Number of reportable segments | segment 2 3      
Operating Segments          
Segment Reporting [Line Items]          
Revenues $ 475.1   466.2 889.6 854.4
Operating Income (Loss), Total 271.3   255.6 508.7 476.7
Operating Segments | MH          
Segment Reporting [Line Items]          
Lease Income, Nontransient 271.2   249.8 540.5 498.6
Lease Income, Transient 0.2   0.2 0.7 0.7
Home sales 22.3   35.0 42.3 56.7
Ancillary 2.0   1.5 4.7 4.0
Revenues 295.7   286.5 588.2 560.0
Cost, Direct Labor 14.8   15.5 30.3 29.5
Utilities Expense 25.5   23.0 52.0 48.4
Professional Fees 7.0   7.9 14.5 15.5
Cost of Property Repairs and Maintenance 14.3   11.9 26.1 21.4
Other Expenses 3.2   4.0 6.2 6.5
Real estate tax 20.1   19.2 39.9 36.9
Segment Reporting, Other Segment Item, Amount 21.7   31.6 42.1 53.0
Operating Income (Loss), Total 189.1   173.4 377.1 348.8
Operating Segments | RV          
Segment Reporting [Line Items]          
Lease Income, Nontransient 90.9   85.5 172.2 159.3
Lease Income, Transient 60.4   63.4 88.8 91.5
Home sales 5.5   6.8 12.0 13.8
Ancillary 22.6   24.0 28.4 29.8
Revenues 179.4   179.7 301.4 294.4
Cost, Direct Labor 24.5   25.1 42.4 42.6
Utilities Expense 18.8   17.9 35.1 33.2
Professional Fees 2.6   3.2 5.5 6.4
Cost of Property Repairs and Maintenance 10.8   9.2 17.2 15.1
Other Expenses 13.0   13.3 21.0 21.5
Real estate tax 7.5   7.3 15.0 14.4
Segment Reporting, Other Segment Item, Amount 20.0   21.5 33.6 33.3
Operating Income (Loss), Total 82.2   82.2 131.6 127.9
Segment Reconciling Items          
Segment Reporting [Line Items]          
General and Administrative Expense (49.9)   (50.6) (108.5) (97.6)
Loss from Catastrophes (0.8)   (0.4) (1.3) (0.3)
Depreciation and amortization 123.9   117.3 245.3 232.0
Asset impairments (see Note 13) 17.9   33.4 18.2 57.4
Loss on extinguishment of debt 0.0   102.4 0.0 (102.4)
Interest 38.1   54.4 76.5 132.9
Realized Gain (Loss), Foreign Currency Transaction, before Tax 13.3   39.4 (10.6) 48.1
Loss on dispositions of properties, net 22.0   1.3 20.9 2.1
Other income / (expense), net 0.1   (6.9) (8.4) (12.6)
Gain (Loss) on Remeasurement of Notes Receivable (2.9)   (1.4) (2.8) (1.6)
Total Income from Nonconsolidated Affiliates 6.1   3.8 12.2 6.8
Loss on remeasurement of investment in nonconsolidated affiliates (1.7)   (1.5) (1.5) (1.5)
Current Income Tax Expense (Benefit) 0.6   2.6 1.5 3.8
Income Tax Expense (Benefit) $ 0.0   $ (0.1) $ 0.1 $ 0.0