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Lennar Homebuilding Senior Notes And Other Debts Payable (Schedule of Senior and Convertible Senior Notes) (Details) - Homebuilding - USD ($)	1 Months Ended				7 Months Ended
	Nov. 30, 2017	Apr. 30, 2017	Nov. 30, 2015	Apr. 30, 2015	Apr. 30, 2013	Nov. 30, 2021	Feb. 12, 2018
Debt Instrument [Line Items]
Interest rate						8.00%
Senior Notes | 6.25% senior notes due December 2021
Debt Instrument [Line Items]
Interest rate						6.25%
Senior Notes | 4.125% senior notes due 2022
Debt Instrument [Line Items]
Interest rate						4.125%
Senior Notes | 5.375% senior notes due 2022
Debt Instrument [Line Items]
Interest rate						5.375%
Senior Notes | 4.750% senior notes due 2022
Debt Instrument [Line Items]
Principal Amount					$ 575,000,000
Net Proceeds					567,585,000
Interest rate						4.75%
Senior Notes | 4.875% senior notes due December 2023
Debt Instrument [Line Items]
Principal Amount			$ 400,000,000
Net Proceeds			$ 393,622,000
Price			99.169%
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]
Principal Amount							$ 425,000,000
Interest rate						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
Debt Instrument [Line Items]
Principal Amount	$ 900,000,000
Net Proceeds	$ 894,650,000
Price	100.00%
Interest rate						4.75%
Senior Notes | 4.750% Senior Notes Due 2022, Issued at 100%
Debt Instrument [Line Items]
Principal Amount					$ 350,000,000
Price					100.00%
Senior Notes | 4.750% Senior Notes Due 2022, Issued at 98.073%
Debt Instrument [Line Items]
Principal Amount					$ 175,000,000
Price					98.073%
Senior Notes | 4.750% Senior Notes Due 2022, Issued at 98.250%
Debt Instrument [Line Items]
Principal Amount					$ 50,000,000
Price					98.25%

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