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Debt (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Debt Instrument [Line Items]
Other notes payable	$ 75,403,000		$ 70,966,000
Current borrowing capacity	1,300,000,000
Maximum borrowing capacity	1,800,000,000
Revolving credit facility	0
Letters of credit outstanding	298,600,000		312,700,000
Line of credit facility, remaining borrowing capacity	951,400,000		937,300,000
Financial Services debt	534,335,000		499,627,000
Joint Venture Debt | Joint Venture
Debt Instrument [Line Items]
Joint venture debt outstanding	$ 58,200,000
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	$ 19,400,000
Notes Payables
Debt Instrument [Line Items]
Other notes payable	$ 75,400,000		71,000,000
Debt instrument term	6 years
Notes payable issued to acquire land inventory	$ 5,400,000	$ 6,700,000
Senior Notes | Unsecure Senior Notes, Due 2026
Debt Instrument [Line Items]
Open market repurchases	10,200,000
Line of Credit | Repurchase Agreement
Debt Instrument [Line Items]
Accordion feature	50,000,000
Financial Services
Debt Instrument [Line Items]
Line of credit facility, remaining borrowing capacity	$ 65,700,000		$ 350,400,000
Short-Term Debt, Weighted Average Interest Rate, at Point in Time	7.13%		7.15%
Revolving Credit Facility
Debt Instrument [Line Items]
Revolving credit facility			$ 0
Line of Credit | Financial Services
Debt Instrument [Line Items]
Financial Services debt	$ 534,300,000		$ 499,600,000
Line of Credit | Amendment Effective September 24, 2018 through and including December 25, 2018 | Financial Services
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 600,000,000
Maximum | Notes Payables
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.00%
Maximum | Line of Credit | Amendment Effective September 24, 2018 through and including December 25, 2018 | Financial Services
Debt Instrument [Line Items]
Commitment ranges	$ 700,000,000

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