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Homebuilding Senior Notes And Other Debts Payable (Schedule of Senior and Convertible Senior Notes) (Details) - Homebuilding - USD ($)	1 Months Ended
	Nov. 30, 2017	Apr. 30, 2017	Apr. 30, 2015	Nov. 30, 2023	Aug. 31, 2023	Nov. 30, 2019	Feb. 12, 2018
Debt Instrument [Line Items]
Interest rate				7.50%
Senior Notes | 4.875% senior notes due December 2023
Debt Instrument [Line Items]
Interest rate				4.875%
Senior Notes | 4.500% senior notes due 2024
Debt Instrument [Line Items]
Principal Amount		$ 650,000,000
Net Proceeds		$ 644,838,000
Price		100.00%
Interest rate				4.50%
Senior Notes | 5.875% senior notes due 2024
Debt Instrument [Line Items]
Interest rate				5.875%	5.875%
Senior Notes | 4.750% senior notes due 2025
Debt Instrument [Line Items]
Principal Amount			$ 500,000,000
Net Proceeds			$ 495,528,000
Price			100.00%
Interest rate				4.75%
Senior Notes | 5.25% senior notes due 2026
Debt Instrument [Line Items]
Principal Amount							$ 400,000,000
Interest rate				5.25%
Senior Notes | 5.00% senior notes due 2027
Debt Instrument [Line Items]
Principal Amount							$ 350,000,000
Interest rate				5.00%
Senior Notes | 4.75% senior notes due 2027 (1)
Debt Instrument [Line Items]
Principal Amount						$ 900,000,000
Net Proceeds	$ 894,650,000
Price						100.00%
Interest rate				4.75%

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