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Debt (Narrative) (Details) - USD ($)	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Jan. 14, 2025	Dec. 31, 2023
Debt Instrument [Line Items]
Other notes payable	$ 41,139,000			$ 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	310,900,000			312,700,000
Line of credit facility, remaining borrowing capacity	939,100,000			937,300,000
Financial Services debt	524,093,000			499,627,000
Joint Venture Debt | Joint Venture
Debt Instrument [Line Items]
Joint venture debt outstanding	35,200,000
Notes Payables
Debt Instrument [Line Items]
Other notes payable	$ 41,100,000			71,000,000.0
Debt instrument term	6 years
Notes payable issued to acquire land inventory	$ 10,800,000	$ 35,300,000
Senior Notes
Debt Instrument [Line Items]
Open market repurchases	310,200,000
Senior Notes | Unsecure Senior Notes, Due 2026
Debt Instrument [Line Items]
Open market repurchases	193,400,000
Senior Notes | Unsecure Senior Notes, Due 2027
Debt Instrument [Line Items]
Open market repurchases	106,600,000
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	$ 150,900,000			$ 350,400,000
Weighted-average interest rate	6.65%			7.15%
Financial Services | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 675,000,000.0
Financial Services | Line of Credit | Subsequent Event
Debt Instrument [Line Items]
Maximum borrowing capacity			$ 650,000,000.0
Revolving Credit Facility
Debt Instrument [Line Items]
Revolving credit facility				$ 0
Line of Credit | Financial Services
Debt Instrument [Line Items]
Financial Services debt	$ 524,100,000			$ 499,600,000
Maximum | Notes Payables
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.00%

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