v3.26.1
Related Party Disclosures (Tables)
 9 Months Ended
Jun. 30, 2026
Related Party Transactions [Abstract]  
Schedule of Related Party Transactions [Table Text Block] At June 30, 2026 and September 30, 2025, the Company owned approximately 62,200 and 65,100 residential lots, respectively, with which D.R. Horton had the following involvement.
 June 30, 2026September 30, 2025
 (Dollars in millions)
Residential lots under contract to sell to D.R. Horton21,800 22,800 
Owned lots subject to right of first offer with D.R. Horton based on executed purchase and sale agreements19,200 17,600 
Earnest money deposits from D.R. Horton for lots under contract$195.3 $179.7 
Remaining sales price of lots under contract with D.R. Horton$2,095.1 $2,000.0 

Lot and land sales to D.R. Horton in the three and nine months ended June 30, 2026 and 2025 were as follows:

Three Months Ended June 30,Nine Months Ended June 30,
 2026202520262025
 (Dollars in millions)
Residential lots sold to D.R. Horton3,370 3,075 7,447 7,688 
Residential lot sales revenues from sales to D.R. Horton$361.1 $325.0 $829.2 $810.2 
Decrease in contract liabilities
$(0.6)$(1.3)$(0.6)$(0.1)
Tract sales and other revenues from D.R. Horton
$0.5 $3.8 $20.7 $7.7