XML 42 R31.htm IDEA: XBRL DOCUMENT v3.22.2
Real Estate - Real Estate (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Sep. 30, 2021
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]          
Real estate $ 2,054.3   $ 2,054.3   $ 1,905.2
Payments to Acquire Residential Real Estate     299.0    
Payments to Develop Real Estate Assets     784.7    
Asset Impairment Charges 0.0 $ 0.0 3.8 $ 0.0  
Due Diligence Write-Offs 1.0 $ 0.7 $ 3.2 $ 1.6  
D.R. Horton, Inc. [Member] | Maximum [Member]          
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]          
Related Party Transaction, Rate     16.00%    
D.R. Horton, Inc. [Member] | Minimum [Member]          
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]          
Related Party Transaction, Rate     12.00%    
Developed and under development projects          
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]          
Real estate 1,950.6   $ 1,950.6   1,824.7
Land [Member]          
SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]          
Real estate $ 103.7   $ 103.7   $ 80.5