v3.26.1
Notes Payable - Forestar Textuals (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Jun. 30, 2026
Sep. 30, 2025
Debt Instrument [Line Items]        
Letters of Credit Outstanding, Amount     $ 285.4  
Forestar Group [Member]        
Debt Instrument [Line Items]        
Line of Credit Facility, Current Borrowing Capacity     715.0  
Line of Credit Facility, Maximum Borrowing Capacity     1,000.0  
Letter of Credit, Maximum Borrowing Capacity (in dollars)     $ 100.0  
Letters of credit, sublimit borrowing capacity, as a percentage     50.00%  
Borrowings outstanding on revolving credit facility     $ 0.0 $ 0.0
Letters of Credit Outstanding, Amount     45.1  
Line of Credit Facility, Remaining Borrowing Capacity     669.9  
Authorized Repurchase Of Debt Securities     30.0  
Debt Repurchase Authorization Remaining     30.0  
Forestar Group [Member] | Credit Facility Maturing October 28, 2026        
Debt Instrument [Line Items]        
Line of Credit Facility, Current Borrowing Capacity     $ 65.0  
Line of Credit Facility, Expiration Date     Oct. 28, 2026  
Forestar Group [Member] | Credit Facility Maturing December 18, 2029        
Debt Instrument [Line Items]        
Line of Credit Facility, Current Borrowing Capacity     $ 650.0  
Line of Credit Facility, Expiration Date     Dec. 18, 2029  
Line of Credit Facility, Increase (Decrease), Net $ 50.0 $ 25.0