Commitments and Contingencies (Details) $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($) lot
Loss Contingencies [Line Items]
Surety bonds, outstanding, amount	$ 359.1
Letters of credit outstanding, amount	116.0
Estimated cost related to letters of credit	157.3
Estimated cost related to bonds	$ 75.1
Number of lots | lot	2,951
Option Contracts
Loss Contingencies [Line Items]
Letters of credit outstanding, amount	$ 2.2
Deposits	19.2
Capitalized costs	2.6
HomeAmerican
Loss Contingencies [Line Items]
Surety bonds, outstanding, amount	$ 68.9