Debt (Narrative) (Details) - USD ($)	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Mar. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Other notes payable	$ 42,173,000			$ 55,228,000
Current borrowing capacity	1,300,000,000
Maximum borrowing capacity	1,800,000,000
Revolving credit facility	0
Letters of credit outstanding	285,000,000			303,400,000
Line of credit facility, remaining borrowing capacity	965,000,000			946,600,000
Financial Services debt	315,583,000			586,711,000
Joint Venture Debt | Joint Venture
Debt Instrument [Line Items]
Joint venture debt outstanding	$ 81,000,000
Joint Venture Debt | Joint Venture | Joint Venture with 50% Interest
Debt Instrument [Line Items]
Ownership interest	50.00%
Joint Venture Debt | Joint Venture | Joint Venture with 50% Interest
Debt Instrument [Line Items]
Joint venture debt outstanding	$ 39,400,000
Notes Payables
Debt Instrument [Line Items]
Other notes payable	$ 42,200,000			55,200,000
Debt instrument term	4 years
Notes payable issued to acquire land inventory	$ 17,700,000	$ 4,500,000
Financial Services
Debt Instrument [Line Items]
Line of credit facility, remaining borrowing capacity	$ 184,400,000			$ 213,300,000
Short-Term Debt, Weighted Average Interest Rate, at Point in Time	6.68%			5.39%
Revolving Credit Facility
Debt Instrument [Line Items]
Revolving credit facility				$ 0
Line of Credit | Financial Services
Debt Instrument [Line Items]
Financial Services debt	$ 315,600,000			$ 586,700,000
Line of Credit | Amendment Effective September 24, 2018 through and including December 25, 2018 | Financial Services
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 500,000,000
Maximum | Notes Payables
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.00%