Commitments and Contingencies (Details) $ in Millions	6 Months Ended
	Jun. 30, 2022 USD ($) lot
Loss Contingencies [Line Items]
Surety bonds, outstanding, amount	$ 379.6
Letters of credit outstanding, amount	211.0
Estimated cost related to letters of credit	186.7
Estimated cost related to bonds	$ 167.3
Number of lots | lot	7,296
Option Contracts
Loss Contingencies [Line Items]
Letters of credit outstanding, amount	$ 11.0
Deposits	40.9
HomeAmerican
Loss Contingencies [Line Items]
Surety bonds, outstanding, amount	$ 159.8