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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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