Commitments and Contingencies (Details) $ in Millions	9 Months Ended
	Sep. 30, 2022 USD ($) lot
Loss Contingencies [Line Items]
Surety bonds, outstanding, amount	$ 367.6
Letters of credit outstanding, amount	166.8
Estimated cost related to letters of credit	155.8
Estimated cost related to bonds	$ 122.9
Number of lots | lot	5,364
Option Contracts
Loss Contingencies [Line Items]
Letters of credit outstanding, amount	$ 5.9
Deposits	24.1
HomeAmerican
Loss Contingencies [Line Items]
Surety bonds, outstanding, amount	$ 117.4