Commitments and Contingencies (Details) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($) lot
Loss Contingencies [Line Items]
Surety bonds, outstanding, amount	$ 331.7
Letters of credit outstanding, amount	109.1
Estimated cost related to letters of credit	156.7
Estimated cost related to bonds	$ 47.1
Number of lots | lot	4,587
Option Contracts
Loss Contingencies [Line Items]
Letters of credit outstanding, amount	$ 7.2
Deposits	22.6
Capitalized costs	3.9
HomeAmerican
Loss Contingencies [Line Items]
Surety bonds, outstanding, amount	$ 62.1