Commitments and Contingencies (Details) $ in Millions	9 Months Ended
	Sep. 30, 2024 USD ($) lot
Loss Contingencies [Line Items]
Surety bonds, outstanding, amount	$ 317.0
Letters of credit outstanding, amount	184.1
Estimated cost related to letters of credit	120.4
Estimated cost related to bonds	$ 136.0
Number of lots | lot	6,104
Option Contracts
Loss Contingencies [Line Items]
Letters of credit outstanding, amount	$ 11.6
Deposits	44.7
Capitalized costs	7.8
HomeAmerican
Loss Contingencies [Line Items]
Surety bonds, outstanding, amount	$ 147.8